upstream/mercurial-mirror Files · contrib/showstack.py

rust-cpython: make PySharedRef::try_borrow_mut() return BorrowMutError...

rust-cpython: make PySharedRef::try_borrow_mut() return BorrowMutError As I said, it shouldn't be an error of Python layer, but is something like a coding error. Returning BorrowMutError makes more sense. There's a weird hack to propagate the borrow-by-leaked state to RefCell to obtain BorrowMutError. If we don't like it, maybe we can add our own BorrowMutError.

Augie Fackler - - Load All Authors

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      # showstack.py - extension to dump a Python stack trace on signal

      #

      # binds to both SIGQUIT (Ctrl-\) and SIGINFO (Ctrl-T on BSDs)

      r"""dump stack trace when receiving SIGQUIT (Ctrl-\) or SIGINFO (Ctrl-T on BSDs)

      """

      from __future__ import absolute_import, print_function

      import signal

      import sys

      import traceback

      def sigshow(*args):

          sys.stderr.write("\n")

          traceback.print_stack(args[1], limit=10, file=sys.stderr)

          sys.stderr.write("----\n")

      def sigexit(*args):

          sigshow(*args)

          print('alarm!')

          sys.exit(1)

      def extsetup(ui):

          signal.signal(signal.SIGQUIT, sigshow)

          signal.signal(signal.SIGALRM, sigexit)

          try:

              signal.signal(signal.SIGINFO, sigshow)

          except AttributeError:

              pass

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				# showstack.py - extension to dump a Python stack trace on signal
				#
				# binds to both SIGQUIT (Ctrl-\) and SIGINFO (Ctrl-T on BSDs)
				r"""dump stack trace when receiving SIGQUIT (Ctrl-\) or SIGINFO (Ctrl-T on BSDs)
				"""

				from __future__ import absolute_import, print_function
				import signal
				import sys
				import traceback


				def sigshow(*args):
				sys.stderr.write("\n")
				traceback.print_stack(args[1], limit=10, file=sys.stderr)
				sys.stderr.write("----\n")


				def sigexit(*args):
				sigshow(*args)
				print('alarm!')
				sys.exit(1)


				def extsetup(ui):
				signal.signal(signal.SIGQUIT, sigshow)
				signal.signal(signal.SIGALRM, sigexit)
				try:
				signal.signal(signal.SIGINFO, sigshow)
				except AttributeError:
				pass